The Constitution of the Republic of Azerbaijan which adopted in 1995 became the fourth Constitution of the Azerbaijani State reflecting its new historical modification. The history of the constitutional formation of the Republic of Azerbaijan mainly relies upon the period when Azerbaijan was the part of USSR.The first Constitution of Azerbaijan was adopted on May 19, 1921 in the First All-Azerbaijani Congress of Soviets. A new redaction of the Constitution of the Republic of Azerbaijan, which was in line with the relevant Constitution of USSR of 1924, has been adopted on March 14, 1925 in IV All-Azerbaijani Congress of Soviets. The new Constitution of the Azerbaijani Soviet Socialist Republic has been enacted on April 21, 1978 which reflected the realities of a new historical stage in the history of the country. As the independence was gained, it became necessary to draft a new Constitution. For this reason, a special commission has been established under the leadership of President Heydar Aliyev. The Constitution has been adopted in accordance with the expressed public will in referendum held on November 12, 1995.The Constitution of 1995 has laid the foundations of the statehood building in the Republic of Azerbaijan. The text of the Constitution of the Republic of Azerbaijan consists of 5 sections, 12 chapters and 158 Articles.The 12th of November is celebrated in the country as the Constitution Day of the Republic of Azerbaijan.

According to the National Department of Hydrometeorology of the Ministry of Ecology and Natural Resources, currently, water richness holds 40-100% of decade norm in Quba-Khachmaz region rivers of Major Caucasus, 30-80% in Minor Caucasus rivers, 65-95% in Lankaran-Astara region rivers

To provide sustainability in the rehabilitation of Absheron lakes, according to the Decree ‘On Measures to improve the environmental situation of Zigh lake’ of the President of the Republic Ilham Aliyev dated 15 October, 2014, realization of works for rehabilitation of the aforementioned lake has started.

The area of the world's forest cover is 4 milliard ha. Of this 809 million ha falls in the share of Russian Federation, 478 million square km belongs to Brazil, 310 million ha pertains to Canada and 303 million ha is in USA